Section 16. Return of Aircraft and Records.



 (a) Return. On the Expiration Date or such other Return Occasion, Lessee, at its own expense, shall return the Aircraft to Lessor in the condition specified in Exhibit F hereto in Tucson, Arizona, or at such other location in the continental United States designated by Lessee, or if an Event Of Default has occurred, at a location to be designated by Lessor (the "Return Location"), fully equipped, with all required Parts and Engines, duly installed thereon, by delivering the same to Lessor at such location. At such time as the Aircraft has been inspected by Lessor and found to be in the condition required hereunder, Lessor shall issue a redelivery receipt to Lessee confirming the same. Any engines installed on the Aircraft returned to Lessor hereunder which had not originally been installed on the Aircraft will be deemed to be part of the Aircraft and owned by Lessor, and Lessor shall, subject to such engines fulfilling all requirements of a Replacement Engine under Section 11(b) hereof, and otherwise complying with all requirements of Exhibit F hereto, relinquish title to any Engines previously removed and replaced by such last-installed engines. Notwithstanding the provisions of Section 9(a) hereof, any and all Parts replaced with Parts that have not been overhauled, repaired and inspected by an FAA approved agency and which do not bear FAA acceptable tags shall be replaced with Parts that do so comply; and provided that any replaced Part shall have an equivalent or later part number, shall have a value and modification status and remaining useful life at least equal to the replaced Part, and shall be completely interchangeable as to form, fit and function. There shall be no substitution of time controlled components such that time remaining on any replacement component is less than the time that was remaining on the replaced component, based upon the actual hours/cycles operated by Lessee.